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New York State-Certified WBE · Federally Certified WOSB · SBA
Built through planning, managed with accountability.
NYSIDI Holdings LLC is a construction management and general contracting firm in Warwick, NY — serving commercial, institutional, public-sector, and select residential projects across New York State.
Capabilities
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Construction Management
Strategic oversight from planning through completion — scope, schedule, budget, and execution coordinated as one.
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Preconstruction
Early-stage budgeting, constructability review, design coordination, and scheduling — before the first cost is committed.
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General Contracting
Project leadership and execution for commercial, institutional, public-sector, and select residential work.
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Custom Residential
Selective custom homes — approached with the discipline of construction management.
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ArticleThe Firm
A construction management firm, first.
NYSIDI is built around the discipline of construction management. Successful projects begin long before construction starts — through thoughtful planning, disciplined management, and an understanding of how design, budgeting, scheduling, and field operations work together from day one.
The firm's approach centers on construction management, preconstruction services, and general contracting support across commercial, institutional, public, and select residential work — partnering closely with owners, architects, engineers, and consultants to build realistic pathways from concept through completion.
Rooted in the Hudson Valley and built on strong local relationships, NYSIDI prioritizes communication, organization, and execution — building intelligently, managing responsibly, and delivering work with long-term value in mind.
On the name
NYSIDI — New York Sustainable Infrastructure Development Initiatives — was born out of a 2018 initiative centered on sustainable communities and infrastructure. That orientation continues today, including current involvement in housing initiatives that align with long-term community growth across New York State.
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ArticleThe Record
A firm is most clearly understood by the shape of the work it manages — its disciplines, its markets, and its standing.
2018
Founded · Warwick, NY
WBE
New York State-certified
WOSB
Federally certified, SBA
NY
Commercial & custom residential
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ArticleTwo Divisions
Two kinds of project. Two ways in.
Commercial and residential clients arrive with different questions. Each division is built for the work — and the buyer — it serves.
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Division
Commercial & Public Sector
For owners, developers, institutions, and procurement teams.
Construction management, preconstruction services, and general contracting for commercial, institutional, and public-sector projects — delivered by a New York State-certified WBE and federally certified WOSB firm. The focus is capability, process, and accountability: the things a procurement officer or commercial owner needs to see before they commit.
- A Preconstruction planning & estimating
- B Commercial & institutional construction management
- C Public & municipal opportunities
- D WBE / WOSB / SBA-qualified engagement
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Division
Custom Residential
For homeowners building something significant.
Building a home carries real weight — budget, design, schedule, and the trust placed in the people managing it. NYSIDI takes selective custom home projects, bringing the same discipline of construction management to residential work: planning, accountability, and personalized execution that protects the client through every stage of the process.
- A Custom home construction
- B Design-build & architectural builds
- C Managed budget, schedule & quality
- D One point of accountability, start to finish
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ArticleCredentials
Certifications that carry real weight — shown with the context they deserve, not as badges in a footer.
NYS · WBE
Women's Business Enterprise
New York State-certified. Recognized for state and public-sector opportunities.
FED · WOSB
Women-Owned Small Business
Federally certified. Qualified for federal contracting consideration.
SBA
Small Business Administration
SBA-recognized WOSB status, supporting federal-program eligibility.
NEW YORK
Statewide Practice
Operating across New York State and the broader Northeast.
Antoinette Khamsopa
Founder · NYSIDI
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ArticleLeadership
Led with consistency, resilience, and accountability.
Construction has never been about simply building structures for me. It has always been about understanding the process behind them — how projects come together, how problems are solved, and how planning, people, and execution ultimately determine success.
NYSIDI is founded and led by Antoinette Khamsopa. Her approach centers practical leadership, accountability, and relationships — building the firm around understanding budgets, coordinating teams, anticipating challenges, and maintaining clear communication throughout the process. Leadership, in her words, is less about titles and more about consistency, resilience, and showing up every day prepared to solve problems.
Read the full story →
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ArticleSelected Work
A record of completed projects.
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ArticleIn Their Words
Trust, earned through execution.
Out of six qualified bids, I chose Antoinette and NYSIDI not only because of their competitive proposal, but because of their passion, integrity, and commitment to excellence. As a small business owner myself, I value supporting local businesses, and partnering with a woman-owned company that takes such pride in their work made the decision easy.
From start to finish, Antoinette and her team delivered an exceptional experience. They built with care, communicated every step of the way, and never cut corners. Their craftsmanship, professionalism, and dedication transformed our vision into reality, and I couldn't be more grateful for the partnership.
What truly set NYSIDI apart was their ability to guide us through the entire process — not only the construction work itself, but navigating the town, permits, inspections, and approvals. Their knowledge made what could have been a complicated process feel smooth and manageable.
We were truly dreading the home project process — budgets, managing personnel and personalities, the logistics. Meanwhile I'd drive by a house NYSIDI was working on and think, that's a really nice house, we should call them first. So glad we did. Antoinette is a next-level communicator; she and her team are collaborative, enthusiastic, and go above and beyond. We needed major hand-holding throughout, and she made sure we were taken care of the entire way.
NYSIDI was a huge help during a stressful time. We were in a bind with our previous builder, and they offered us the best path forward to build our home. We appreciated the responsiveness, the communication, and the follow-through on the important items throughout the project.
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ArticleEngagement
How working with NYSIDI begins.
Every project starts with the same first step — a conversation about scope, intent, and fit.
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01
The inquiry
You tell us about the project — its type, its scale, and what you need from a construction manager. Commercial, public-sector, and residential inquiries are all welcome.
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02
Scope & preconstruction
We work through scope, budget, and schedule before any cost is committed — so the project begins with a clear, shared understanding of what is being built and how.
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03
Managed delivery
NYSIDI manages the build to its standards — holding schedule, budget, and quality to account, and protecting the client through every stage of the process.
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ArticleQuestions
Questions owners ask first.
What does a construction manager actually do on my project?
A construction manager coordinates the whole project — scope, schedule, budget, and the trades — and is accountable for how they work together. NYSIDI leads the planning before construction starts and manages the build through completion, so there is one point of responsibility from concept to finish rather than a collection of disconnected contractors.
What is preconstruction, and why does it matter?
Preconstruction is the early-stage work that happens before the first cost is committed — budgeting, constructability review, design coordination, and scheduling analysis. It is where most of a project's risk is either managed or created. Getting it right is what keeps a build on schedule and on budget once it begins.
What does NYSIDI's WBE and WOSB certification mean for a project?
NYSIDI is a New York State-certified Women's Business Enterprise (WBE) and a federally certified Women-Owned Small Business (WOSB). For public and institutional projects, those certifications can support participation goals and set-aside considerations. For a verification of specific eligibility on a given opportunity, reach out and NYSIDI will walk you through it directly.
Does NYSIDI take on custom residential work?
Yes — selectively. NYSIDI takes on a limited number of custom home projects and brings the same discipline of construction management to them: planning, accountability, and personalized execution. Residential work is approached as managed construction, not volume homebuilding.
What areas does NYSIDI serve?
NYSIDI is based in Warwick, New York, and is rooted in the Hudson Valley. The firm works on commercial, institutional, public-sector, and select residential projects across New York State.
Discuss a project with NYSIDI.
Tell us about the project and we'll take it from there — commercial, institutional, public-sector, and select residential inquiries are all welcome.